Banca de DEFESA: RENILSON PESSOA MORATO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : RENILSON PESSOA MORATO
DATE: 31/07/2023
TIME: 14:00
LOCAL: Virtual Google Meetings
TITLE:

COMPATIBILITY OF INSECTICIDES WITH THE EARWIG Euborellia annulipes (LUCAS) (DERMAPTERA: ANISOLABIDIDAE) TO CONTROL PESTS OF BRASSICAS

KEY WORDS:

Biological control, insecticide selectivity, integrated control, predatory behavior. 

PAGES: 81
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Entomologia Agrícola
SUMMARY:

Pest infestation limits the productivity of brassica crops, especially the diamondback moth (DBM), Plutella xylostella L. (Lepidoptera: Plutellidae). The DBM requires intensive control, predominantly through insecticide applications. This management has resulted in cases of resistance to all insecticide modes of action recommended for its management. The integration of natural enemies for control of P. xylostella not only aims to reduce the use of insecticides but also to mitigate the frequent cases of resistance. The ring-legged earwig Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae) exhibits interesting characteristics for conservation in the ecosystem of brassicas and use in the management of the DBM, such as a generalist feeding habit, living in the soil but also among imbricated leaves and inflorescences of brassicas, and being easy and low-cost to rear. The present study evaluated the compatibility of insecticides recommended for P. xylostella control in brassicas with the ring-legged earwig, aiming at its conservation for the management of brassica pests. Bioassays were conducted to identify the lethal and sub-lethal effects, predation, and feeding preferences of E. annulipes. The results showed that E. annulipes exhibited high survival when exposed to the insecticides azadirachtin, cyantraniliprole, chlorantraniliprole, deltamethrin, spinosad, indoxacarb, methomyl, and teflubenzuron. Ring-legged earwig predation on P. xylostella was not affected by exposure to tested insecticides. The insecticide cyantraniliprole caused a sublethal effect on developmental time and a lethal one, with lower survival of nymphs. In addition, earwig females exposed to dry residues of cyantraniliprole delayed the first egg batch's production and laid a lower number of eggs per batch. The association between indoxacarb and the ring-legged earwig released on caged Chinese cabbage plants promoted the mortality of more than 90% of DBM larvae and pupae. The results indicate the compatibility of E. annulipes with several insecticides recommended for brassica pest control, which allows the combination of these insecticides and the ring-legged earwig for the management of DBM and other brassica pests.

COMMITTEE MEMBERS:
Presidente - JORGE BRAZ TORRES
Externo à Instituição - GILMAR DA SILVA NUNES - IFGoiano
Externo à Instituição - PAULO ROBERTO RAMOS BARBOSA - UFVJM
Externo à Instituição - ROGÉRIO LIRA
Externo à Instituição - VANDO MIOSSI RONDELLI - UNIR